THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING

question 58

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
The following table displays the joint probability distribution of two discrete random variables X and Y.
-Compute the variance for the linear function W = 2X + Y.

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Definitions:

Need for Achievement

A psychological trait that drives individuals to succeed in their goals, often pushing them to overcome challenges and achieve high standards.

Physical Activity

Physical activity refers to any bodily movement produced by skeletal muscles that requires energy expenditure, including activities undertaken while working, playing, carrying out household chores, traveling, and engaging in recreational pursuits.

Attention

The cognitive process of selectively concentrating on one aspect of the environment while ignoring other stimuli.

External Locus of Control

The belief that one's successes or failures result from external factors beyond one's control, as opposed to one's own efforts.